can't get "up top" to get lean!!!

tried different mass airs, different injectors, different plugs, with the auto lite "racing" plugs long shanks the car ran well for a while, then started to load up and smoke, runs rough. floods out and won't restart. Injector harness checked, seems to be firing injectors when it's supposed to. strong spark from coil, strong spark to distributor, strong spark at plugs!!
grounds look good, took them off and sanded metal around them to make sure good connection. IAC seems to be working, tps seems fine, changed plug wires, checked all sensors on manifold, checked all vacuum lines, no vacuum leaks.
wow
I'll figure it out or part it out LOL